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[net-next,08/11] net:fec: change FEC alignment to 64 bytes for ARM platform

Message ID 1409776486-1403-9-git-send-email-y
State Superseded, archived
Delegated to: David Miller
Headers show

Commit Message

y@shlinux1.ap.freescale.net Sept. 3, 2014, 8:34 p.m. UTC 
From: Fugang Duan <B38611@freescale.com>

Since enet-avb has 64 bytes alignment limitation for rx DMA transfer.
The previous enet IP for ARM platform has 16 bytes alignment for tx
DMA transfer. 64 is the an integral number of 16, so change alignment
to 64 bytes for all ARM platform, which don't impact the performance
of previous platform.

Signed-off-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Frank Li <Frank.Li@freescale.com>
---
 drivers/net/ethernet/freescale/fec_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index a232245..b388e29f 100644
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -65,7 +65,7 @@ 
 static void set_multicast_list(struct net_device *ndev);
 
 #if defined(CONFIG_ARM)
-#define FEC_ALIGNMENT	0xf
+#define FEC_ALIGNMENT	0x3f
 #else
 #define FEC_ALIGNMENT	0x3
 #endif